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  <title>Enhances the contrast of a color image</title>

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</div><hr /><div id="imagick.normalizeimage" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Imagick::normalizeImage</h1>
  <p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">Imagick::normalizeImage</span> &mdash; <span class="dc-title">Enhances the contrast of a color image</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-imagick.normalizeimage-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>Imagick::normalizeImage</strong></span>
    ([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$channel</code><span class="initializer"> = Imagick::CHANNEL_ALL</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   Enhances the contrast of a color image by adjusting the pixels
   color to span the entire range of colors available.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-imagick.normalizeimage-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">channel</code></em></dt>

     <dd>

      <p class="para">
       Provide any channel constant that is valid for your channel mode. To
       apply to more than one channel, combine channeltype constants using
       bitwise operators. Refer to this
       list of <a href="imagick.constants.html#imagick.constants.channel" class="link">channel constants</a>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-imagick.normalizeimage-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>。
  </p>
 </div>


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